Guney-ye Gharbi Rural District () is in Tasuj District of Shabestar County, East Azerbaijan province, Iran. Its capital is the village of Til.
At the time of the 2006 National Census, the rural district's population was 7,867 in 2,295 households. There were 7,505 inhabitants in 2,395 households at the following census of 2011. The 2016 census measured the population of the rural district as 8,339 in 2,856 households. The most populous of its nine villages was Til, with 3,303 people.